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Erik Martin

The Nature Conservancy (TNC) recently completed an unprecedented assessment of almost 14,000 dams in the Northeastern United States. The Northeast Aquatic Connectivity (NAC) project allows fisheries managers and other interested parties to assess dams at multiple scales based on their potential to benefit anadromous and resident fish species if removed or bypassed. This work has continued, with support from NOAA and USFWS, in the Chesapeake Bay watershed, where data refinements and further analysis have produced a web map and tool that allow users to interactively prioritize dams for mitigation at multiple scales and with varying criteria.The Southeast Aquatic Resources Partnership (SARP) has recently completed...
This tool allows users to view aquatic barriers (dams, road-stream crossings) by the relative gain in ecological value if they were removed. Users start with a consensus map of anadromous fish priorities, which was developed based on stakeholder input as part of the North Atlantic Aquatic Connectivity Collaborative (NAACC). Beyond the consensus results, interested users can create their own scenarios by filtering input barriers to limit the analysis to a given state or watershed, changing the weights of metrics according to their importance to the analysis objectives (e.g. length of upstream network connected, number of diadromous fish present, etc.) and by modeling the removal of up to 10 barriers.The link address...
Fishery and aquatic scientists often assess habitats to understand the distribution, status, threats, and relative abundance of aquatic resources. Due to the spatial nature of habitats and associated temporal changes, using traditional analytical methods is often difficult. This project developed habitat assessment models and outputs for the North Atlantic Landscape Conservation Cooperative region that are based on a stakeholder driven process. In addition to assessing habitat conditions, GIS decision support tools were developed and provided to assist with resource planning efforts, at both the regional and site-specific scale.Downstream Strategies (DS), together the North Atlantic Landscape Conservation Cooperative...
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